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Evaluation of a wrist orthosis on lofstrand crutch-assisted gait. Conf Proc IEEE Eng Med Biol Soc 2016 08;2016:5042-5045 PMID: 28269401

Pubmed ID

28269401

Abstract

Lofstrand, or forearm, crutches are a common assistive mobility device for those with functional impairments. However, repeated loading of the wrist and palmar region and continual hyperextension of the wrist during Lofstrand crutch usage may cause wrist strain, pain, and secondary injuries such as carpal tunnel syndrome. In order to reduce risk of injury, a novel wrist orthosis was developed with the intent of improving wrist posture and reducing/redirecting palmar loads from the carpal tunnel region to the adductor pollicis area. Dominant-hand palmar loads and wrist extension angles of 10 healthy, able-bodied subjects were measured during swing-through Lofstrand crutch-assisted gait to demonstrate the orthosis effectiveness. Each subject performed 10 trials each with and without the orthosis. An enhanced understanding of the effects of the wrist orthosis on kinematics and palmar loading was gained through this study. Results indicated a significant decrease in maximum palmar force, contact area, and wrist extension when using the orthosis. Palmar loads were observed to be redirected toward the adductor pollicis when using an orthosis during Lofstrand crutch-assisted gait. Ultimately, this device was effective in redistributing palmar loads with the potential to reduce pain and risk of carpal tunnel syndrome in long-term Lofstrand crutch users.

Author List

Farooq D, Jahanian O, Slavens BA, Hsiao-Wecksler ET

Author

Brooke Slavens BS,MS,PhD Assistant Professor in the Occupational Science & Technology department at University of Wisconsin - Milwaukee




Scopus

2-s2.0-85009089450   1 Citations

MESH terms used to index this publication - Major topics in bold

Adolescent
Adult
Biomechanical Phenomena
Crutches
Female
Forearm
Gait
Hand
Humans
Male
Muscle, Skeletal
Orthotic Devices
Pressure
Wrist
Wrist Joint
Young Adult
jenkins-FCD Prod-300 626508253d14e4184314fb9f66322a03a5906796